Meet Our Expert Practioners


Jenn Dee   

CAST Implementation Specialist – As an Implementation Specialist, Jen Dee supports educators in their use of Universal Design for Learning to provide the best learning experiences for a wide variety of students. She coaches teams of educators as they work to bring the principles of UDL to life in their classrooms, schools, and districts. Prior to joining CAST, she worked as a high school special education teacher and Teach for America corps member in Chalmette, Louisiana. In this role she supported students with a wide variety of learning, social, and emotional differences in their studies of algebra, geometry, and pre-calculus. She also coached a running club at this school, and ran her first half marathon alongside her students through Youth Run NOLA. Additionally, Jen has experience working in preschool programs for students with intellectual and developmental disabilitiesprograms for dual language learners, and programs for children experiencing homelessness. In her spare time Jennifer enjoys running, spending time with her niece, and watching the Boston Red Sox.


Bill Ferriter         BillFerriterPhoto     teaching_igeneration_1

William M. Ferriter is a National Board Certified Teacher of sixth-graders in a professional learning community in North Carolina. He has designed professional development courses for educators nationwide…READ MORE.

Ari Fleisher        


CAST Implementation Specialist – Ari Fleisher facilitates and manages CAST Institutes, and supports the Professional Learning team with operations and staffing. She has seen learning environments come alive in and out of classrooms through her work with curriculum, school climate and culture, and social-emotional learning. Ari believes that UDL can help to deepen students’ excitement about discovery, and is thrilled to be spreading the word of UDL to help set students (and educators) up for long-term success. Ari enjoys camping, biking and singing.

Heather Francis   

CAST Implementation Specialist – As an Implementation Specialist, Heather Francis collaborates with educator teams to facilitate the application of UDL in the education field. With a background in educational neuroscience and special education, Heather is passionate about working with researchers and practitioners to create more inclusive learning environments for all students. Heather enjoys reading, cooking, and traveling with her husband.

Robin Hall      CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90

Dr. Robin Hall has served as Executive Director of the Regional System of District & School Support, Region 4, since 2001. Prior to her leadership of R4SDSS, she was a classroom teacher for twenty years, worked as a site – and district-level administrator, and provided accountability and categorical program guidance and assistance at the county office level.  She earned a M.S. in Educational Leadership at CSU East Bay, and in 2005, after completing a dissertation on the impact of publicly funded intervention and support programs on low-performing schools, earned an Ed.D. at St. Mary’s College.

Tammy Heflebower tammyh   tammybooks  tammybook2

Tammy Heflebower, EdD, is senior scholar at Marzano Research. She is a highly sought-after school leader and consultant with vast experience in urban, rural, and suburban districts throughout North America, Europe, and Australia. Dr. Heflebower has served as a classroom teacher, building leader, district leader, regional professional development director, and national trainer. She has also been an adjunct professor of curriculum, instruction, and assessment at several universities.  READ MORE


Janel Keating          janel     everyschoolteamclassroom

Janel Keating is deputy superintendent of the White River School District in Washington. She has been an elementary and middle school teacher, an elementary principal, and a director of student learning…READ MORE.


Mike Mattos     MikeMattosPhoto      mikebook    mikebook2

Mike Mattos is an internationally recognized author, presenter, and practitioner who specializes in uniting teachers, administrators, and support staff to transform schools by implementing response to intervention and professional learning communities. Mike co-created the RTI at Work™ model, which builds on the foundation of the PLC at Work™ process by using team structures and a focus on learning, collaboration, and results to drive successful outcomes. READ MORE


John Stevens          

John Stevens is an educational technology coach for Chaffey Joint Union High School district who has also taught Geometry, Algebra 1, Middle School Math, Service Learning, and Robotics/Engineering & Design since 2006. He has served as the go-to guy for trying new, crazy, and often untested ideas to see how well they will work. Check out!


Matt Vaudrey   john    

As a secondary educator, Matt wears costumes, plays loud music, stands on desks, and shows videos and pictures to make math meaningful for his students. As an education professional, he writes about successes, failures, and everything in between on his website (, then takes those lessons into the conference room, where he enjoys sharing what he’s learned with fellow teachers.


Kelly Wylie, R4SDSS Program Director 

Kelly Wylie, Region 4 System of District and School Support Program Director, is a veteran educator with over 20 years of experience. Prior to her work at R4SDSS, Kelly had been a middle school administrator, an instructional coach and a classroom teacher. She provides expert practitioner technical assistance in the areas of Professional Learning Communities, Accountability, Multi-tiered System of Supports and ESSA; having presented at the national, state and local level.